Block-side guard for upright-shingle-machine saws.



w. I. SIMPSON. BLOCK SIDE GUARD FOR UPRIGHT SHINGLE MACHINE SAWS.

APPLICAUON FILED JMLZO I919.

Patented Apr. 29, 1919.

WILLIAM ISAAC SIMPSON, 0F VANCOUVER, BRITISH COLUMBIA, CANADA, ASSIGNORTO OLIVER LEWIS WARNER, OF VANCOUVER, BRITISH COLUMBIA, CANADA.

BLOCK-SIDE GUARD FOR UPRIG-HT-SHINGLE-MACHINE SAWS.

moans.

Specification of Letters Patent.

Patented Apr. 29, 19119.

Application filed January 20, 1919. Seria1No. 272,110.

To all whom it may concern:

Be it known that I, WILLIAM ISAAC SIMP- SON, a subject of the King ofGreat Britain, and a resident of the city of Vancouver, in the Provinceof British Columbia, Canada, have invented certain new and usefulImprovements in Block-Side Guards for Up right-Shingle-Machine Saws, ofwhich the following is a specification.

My invention relates to improvements in guards for saws, with particularreference to the saws of upright shingle machines, and the object of myinvention is to devise a simple, cheap and effective guard adapted to beplaced on the block side of such saws the use of which eliminates thedanger to the operator which exists where the saw is unguarded, such asthe possible danger of having the fingers out off or the hand otherwiseinjured.

I attain this object by the construction illustrated in the accompanyingdrawings in which- Figure 1 is a perspective view of a portion of theshingle machine and saw showing the application of my guard thereto.

Fig. 2 is a perspective view looking on the side opposite to that shownin Fig. 1.

Fig. 3 is a detail view of the guard, in perspective.

Similar figures of reference indicate similar parts throughout theseveral views.

1 indicates a portion of an upright shingle machine and 2 the carriagebetween the upper and lower jaws 3 and 4: of which the shingle bolt isheld to be cut by the saw 5. Secured to the back of the carriage asshown in Fig. 2 is a bracket 6 one arm of which extends parallel withthe side of the saw and adjustably mounted on this bracket 6 is anotherbracket 7 the horizontal arm 8 of which extends toward the saw at rightangles to the bracket 6, a locking screw 9 being provided for lockingthe bracket in any adjusted position. The bracket 7 is provided with anupstanding arm 10 to which is secured a guard formed out of a flat plate11, of wood or any other suitable material, the outer edge of which iscurved as shown and extends beyond the saw teeth about three inches, andthe arrangement and length of the brackets 6 and 7 is such that when thedevice is assembled the guard 11 lies close against the saw on the blockside so that it will be seen that there is therefore no space for thefingers of the operator to get into, so that should the fingers slipwhen operating the machine in proximity to the saw no harm can result,as they strike the forward edge of the guard, whereas without the guarda slip of the fingers would probably result in their being cut off bythe saw.

It will thus be seen that I have devised a simple and inexpensive sawguard the use of ,which provides safety to the operator of uprightshingle bolt machines.

What I claim as my invention is:

The combination with an upright shingle machine frame and saw, of anlL-shaped bracket secured to the machine carriage having its long armextending parallel to the saw. on the block side of the same, a secondL-shaped bracket mounted on the said long arm for longitudinaladjustment thereon, a guard plate secured to the free end of the secondmentioned bracket having its forward edge extending in advance of thesaw teeth, and means for securing said bracket in its adjusted position.

Dated at Vancouver, B. (1., this 10th day of January, 1919.

WILLIAM ISAAC SIMPSON.

Gopies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents, Washington, JD. 0.

